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Related Concept Videos

Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
Prosopagnosia01:24

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...

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Related Experiment Video

Updated: May 8, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
07:12

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Visual search performance in the neglect syndrome.

M Eglin1, L C Robertson, R T Knight

  • 1University of California, Davis, Veterans Administration Medical Center, Martinez, University of California, Berkeley.

Journal of Cognitive Neuroscience
|August 27, 2013
PubMed
Summary
This summary is machine-generated.

Hemispatial neglect patients struggle with visual stimuli. Distractors on the intact side significantly slow attention shifts to the neglected side, especially in complex tasks.

More Related Videos

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection
07:04

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection

Published on: March 10, 2021

Related Experiment Videos

Last Updated: May 8, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
07:12

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection
07:04

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection

Published on: March 10, 2021

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Ophthalmology

Background:

  • Hemispatial neglect is a neurological condition where patients fail to respond to stimuli on one side of space.
  • Understanding the factors influencing neglect severity is crucial for developing effective interventions.

Purpose of the Study:

  • To investigate how visual stimulus complexity and quantity affect hemispatial neglect severity.
  • To determine the impact of distractors on the intact side of space on attention shifts to the neglected side.

Main Methods:

  • Patients with hemispatial neglect performed visual search tasks with varying stimulus complexity and quantity.
  • Two sets of stimuli were used: one for parallel search and another for serial search in healthy controls.
  • Performance was assessed by measuring search times for targets amidst distractors on both neglected and intact sides.

Main Results:

  • Patients exhibited serial search patterns regardless of stimulus complexity.
  • Distractors on the intact side disproportionately slowed search for targets on the neglected side.
  • This slowing effect intensified with increased task complexity and a higher number of intact-side distractors.

Conclusions:

  • Hemispatial neglect is linked to an impaired ability to disengage attention from stimuli on the intact side to attend to the neglected side.
  • The findings highlight the role of attentional control deficits in the manifestation of hemispatial neglect.